From bc4fc3b442d7e02390807c50a3b99a5790f112d6 Mon Sep 17 00:00:00 2001
From: Tobias Girstmair <t@thi3nkpad.localdomain>
Date: Sat, 27 Apr 2024 12:41:31 +0200
Subject: [PATCH] defend against malformed messages

if a message consists of only the prefix, we'd overrun the buffer.
---
 ircpipe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ircpipe.c b/ircpipe.c
index 43b3d61..89be7ea 100644
--- a/ircpipe.c
+++ b/ircpipe.c
@@ -116,7 +116,7 @@ int irc_answer(const sock_t sock, char *buf, const unsigned int command) {
 	do {
 		/* skip over prefix (servername): */
 		if (line[0] == ':')
-			while (*line++ != ' '); /*todo: check truncation(\0)*/
+			while (*line && *line++ != ' ');
 
 		/* look for command responses, if any: */
 		switch (command) {
-- 
2.39.3